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Old 11-21-2015, 03:04 PM
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Default 2013 XM Bog/cuts out top end

Hello SnoWest friends! I have been running a 2013 Summit 800 e-tec XM 154 for the past three years. Pretty much 2 years (broke my knee in 2013) it has about 7,000 miles on it now. It runs great starts everytime low too mid range RPMs are awesome. On the top end, starting last year, about 7,500-8,000rpms it hits a spot where is will cut out bad. It sounds like it has a cold and there is some "STUFF" in it's throat. Almost like it hits the rev-limiter but, not high enough RPMs. The only "mod" I have done is put a Bikeman Muffler on it (which makes the cutting out sound a whole lot worse).

I am wondering if anyone else has had the same problem? We also have a 2014 Summit 800 e-tec XM that will do the same thing from time to time. It also has a Bikeman Muffler.

I haven't done any messing around with the exhaust, checked compression, and so on. I understand 7,000 miles is a lot for a 2-stroke sled but, as far as I can tell everything is running fine. We have had rentals with more miles that run great. Any help or advise would be greatly appreciated!
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Old 11-21-2015, 03:10 PM
powdermuncher powdermuncher is offline
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Had the same issue with the GGB can on a summit 600 Runs perfect with the stock muffler also get a reflash with the latest update from your Dealer , they made some grade improvements with the fuel mapping.
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Old 11-21-2015, 04:15 PM
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Thanks "powdermuncher"! I have been meaning to try the stock muffler just haven't done it. It's just weird that for 3 years the sled ran great with the Bikeman muffler and out of no where started running like crap. Maybe I can talk "upper management" into an 872 and about $5k in parts! haha, thanks for the help.

BTW we are riding here at Crooked Creek, it's not great yet but, soon it will be!
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Old 11-21-2015, 08:39 PM
Proride_58640 Proride_58640 is offline
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Is your can cause a code be thrown saying exhaust temps too high? They make an adapter now. Just weird it hasn't done it till just now.


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Old 11-21-2015, 10:09 PM
rmk all the way rmk all the way is offline
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Have you rebuilt the top end yet or is motor still stock?
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Old 11-21-2015, 11:08 PM
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Have your dealer or yourself check the fuel pressure regulator in the tank. The 13's had issues with the regulator popping out on one side causing run ability issues.
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Old 11-22-2015, 10:08 AM
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So last night I switched the muffler back to stock, checked compression, and put new plugs in it. It still does the same thing

I brought it to our dealer last winter and they did all the computer updates and checked any codes. Everything is stock haven't rebuilt the top end only replaced wore out ramps, rolls, ect. in the primary. Could it be a RAVE valve hanging up or dirty?

The compression was about 100psi which for our elevation (8,500ft) seems pretty good, and it was exactly the same on both sides. I really thought it was the muffler but, it does the same thing with the stock one.

It will actually only run about 7,200 RPMs and I have no weight in the clutch and the clickers are set at 5. It used to run about 8,200 rpms with the clickers set at 3...
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Old 11-22-2015, 10:48 AM
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like sledhead said: check fuel pressure regulator in the tank!
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Old 11-22-2015, 12:06 PM
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And no harm checking the exhaust valves while you are at it and clean them at that milage.
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Old 11-22-2015, 10:47 PM
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Have you inspected your rollers/bushings/ramps in the primary clutch lately?
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Old 11-27-2015, 01:46 PM
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Old 11-27-2015, 03:11 PM
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Old 11-28-2015, 09:05 AM
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Old 12-01-2015, 12:05 PM
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Old 12-01-2015, 11:54 PM
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